421166267 has 2 divisors, whose sum is σ = 421166268. Its totient is φ = 421166266.

The previous prime is 421166261. The next prime is 421166287. The reversal of 421166267 is 762661124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421166267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421166261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210583133 + 210583134.

It is an arithmetic number, because the mean of its divisors is an integer number (210583134).

Almost surely, 2^421166267 is an apocalyptic number.

421166267 is a deficient number, since it is larger than the sum of its proper divisors (1).

421166267 is an equidigital number, since it uses as much as digits as its factorization.

421166267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 421166267 is about 20522.3358076024. The cubic root of 421166267 is about 749.5797746656.

The spelling of 421166267 in words is "four hundred twenty-one million, one hundred sixty-six thousand, two hundred sixty-seven".